Publication: Surgical correction of coxa vara: Evaluation of neck shaft angle, Hilgenreiner-epiphyseal angle for indication of recurrence
Issued Date
2019-05-01
Resource Type
ISSN
22133445
09765662
09765662
Other identifier(s)
2-s2.0-85049320207
Rights
Mahidol University
Rights Holder(s)
SCOPUS
Bibliographic Citation
Journal of Clinical Orthopaedics and Trauma. Vol.10, No.3 (2019), 593-598
Suggested Citation
Thammanoon Srisaarn, Krits Salang, Benjamin Klawson, Kitiwan Vipulakorn, Ornusa Chalayon, Perajit Eamsobhana Surgical correction of coxa vara: Evaluation of neck shaft angle, Hilgenreiner-epiphyseal angle for indication of recurrence. Journal of Clinical Orthopaedics and Trauma. Vol.10, No.3 (2019), 593-598. doi:10.1016/j.jcot.2018.06.009 Retrieved from: https://repository.li.mahidol.ac.th/handle/20.500.14594/51694
Research Projects
Organizational Units
Authors
Journal Issue
Thesis
Title
Surgical correction of coxa vara: Evaluation of neck shaft angle, Hilgenreiner-epiphyseal angle for indication of recurrence
Abstract
© 2018 Background: Coxa vara is a hip deformity in which the femoral neck-shaft angle decreases below its normal value. Standard surgical treatment for this condition is corrective valgus osteotomy. Appropriate correction of the Hilgenreiner-epiphyseal angle is important to prevent recurrence. The purpose of this study is to: 1) evaluate the recurrence of the deformity at the latest follow up; and 2) find the appropriate angle of correction associated with the lowest recurrence. Methods: 34 hips in 31 patients who underwent surgery for treatment of coxa vara from 2005 to 2014 were included. Patient-reported outcomes, Hilgenreiner-epiphyseal angle, and neck-shaft angle were assessed preoperatively, postoperatively, and at latest follow-up. Results: The mean age at surgery was 10.99, with a range of 5–30, years. Preoperative neck-shaft angle ranged from 60 to 100 degrees, and Hilgenreiner-epiphyseal angle ranged from 60 to 90 degrees. At the latest follow up, the neck-shaft angle ranged from 120 to 135 degrees and the Hilgenreiner-epiphyseal angle ranged from 22 to 35 degrees (p < 0.001). The Harris hip score improved from 47.20 (34–66) to 79.68 (60–100) (p < 0.001). There was no recurrence of deformities at the mean follow up of 37.87 months. Conclusion: Surgical correction of coxa vara in various pathologies can be done successfully with the Hilgenreiner-epiphyseal angle corrected to ≤ 35 degrees or the neck shaft angle corrected to > 120 degrees in order to prevent recurrence of the deformity. Majority of the patients were reported improvement of hip function. However, a longer-term follow up is required to determine further outcomes regarding to recurrence of the deformity.